zip-lock or snap-lock bags will not kill the smell, you need to use oven bags, they are air proof, normal plastic isn't. A few tips: Don't touch any of the bags until you wash your hands with metho, then a good detergent. Get someone else to place the weed into the oven bag, fold oven bag numerous times, tape. Place oven bag into another oven bag, fold and tape, you can now put this into a small zip-lock. There should be no smell at all if you do not contaminate any of the outer surfaces with weed fingers. Two pairs of jocks or double bag and one pair of jocks (chuck out out bag once arrived) Don't smoke on the day of the flight, don't wear weed smelling clothes, and all should be fine. Put the packet in your jocks early in the morning then forget about it, if you don't remember you have you will have nothing to be nervous about. Disclaimer: This advice was for theoretical and theatrical purposes only.